mesa/formatquery: Added INTERNALFORMAT_PREFERRED pname

Reviewed-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/mesa/main/formatquery.c b/src/mesa/main/formatquery.c
index 00abe399ed27b30d41badcfffed4795d4297ddf2..2037e84e17b787553e78f49065e4acdbab67fafc 100644 (file)
--- a/src/mesa/main/formatquery.c
+++ b/src/mesa/main/formatquery.c
@@ -582,6 +582,10 @@ _mesa_query_internal_format_default(struct gl_context *ctx, GLenum target,
       params[0] = GL_TRUE;
       break;
 
+   case GL_INTERNALFORMAT_PREFERRED:
+      params[0] = internalFormat;
+      break;
+
    default:
       _set_default_response(pname, params);
       break;
@@ -665,7 +669,16 @@ _mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
       break;
 
    case GL_INTERNALFORMAT_PREFERRED:
-      /* @TODO */
+      /* The ARB_internalformat_query2 spec says:
+       *
+       *     "- INTERNALFORMAT_PREFERRED: The implementation-preferred internal
+       *     format for representing resources of the specified <internalformat> is
+       *     returned in <params>.
+       *
+       * Therefore, we let the driver answer.
+       */
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
    case GL_INTERNALFORMAT_RED_SIZE: